Answers: 2
Physics, 22.06.2019 22:30
Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign
Answers: 3
Physics, 23.06.2019 01:00
To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle ΞΈ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction ΞΌk between the sled and the ground, assuming that it is constant throughout the trip.
Answers: 1
Physics, 23.06.2019 02:30
Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?
Answers: 1
Physics, 23.06.2019 05:00
Which factor listed below most likely results in the loss of genetic variation from small populations? question 2 options: mutation migration genetic recombination genetic drift
Answers: 3
A 5 β foot ladder is placed against a vertical wall. Suppose that the bottom of the ladder slides aw...
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